Iterator 迭代器和 数组与集合之间的转换

public class Come {
     @Test
   public void  Mytest(){
        Collection co = new ArrayList();
        co.add("aa");
        co.contains( new Person(14,"Tom"));
         boolean coll = co.contains(new Person(14,"Tom"));
       System.out.println(coll);
    }
    @Test
    public  void  test1(){
        Collection co = new ArrayList();
        co.add("aa");
        co.add("bb");
        co.add("cc");
         //数组转化成集合
        List<String> list = Arrays.asList(new String[]{"c", "d", "e"});
        System.out.println(list);
        //让集合 转换成数组
        Object []  a = co.toArray();
       for(int i=0;i<a.length;i++){
            System.out.println(a[i]);
        }

        Iterator list1=list.iterator();
            //运用Iterator  来遍历集合
        while(list1.hasNext()){
            System.out.println(list1.next());
        }

    }
}